Find the fourth proportional of 4, 12, and 20.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 60.
Find the fourth proportional of 4, 12 and 20.
4 : 12 :: 20 : x
⇒ x = (12 × 20) ÷ 4
⇒ x = 240 ÷ 4
⇒ 60
SSC GD 2025 PYQ — Question 59
SSC GD Const 2025 (English) - 13 Feb 2025 - Shift 2 • Quantitative Aptitude • Q59